Friday

April 18, 2014

April 18, 2014

Posted by **sara** on Wednesday, December 1, 2010 at 12:47pm.

25 47 32 56

At a .05 level of significance, determine whether or not the mean of the population from which this sample was taken is significantly different from 48. (Assume the population is normally distributed.)

- stats -
**PsyDAG**, Thursday, December 2, 2010 at 4:08pmZ = (mean1 - mean2)/standard error (SE) of difference between means

SEdiff = √(SEmean1^2 + SEmean2^2)

SEm = SD/√(n-1)

If only one SD is provided, you can use just that to determine SEdiff.

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion related to the Z score.

**Related Questions**

statistik - Below are random sample of 4 observations. 25,75,32,56 Based on the ...

Stats - Recently, an automobile insurance company performed a study of a random ...

Stats - I just need help with starting how to calculate the problem I am so lost...

statistics - I really need help with my statistical analysis... i cant ...

math - Q:The table below shows a distribution and the observed frequencies of ...

math - can you please try to help me understand this? Q:The table below shows a ...

Math - According to CTIA-The Wireless Association, the mean monthly cell phone ...

business stats - Given the following information about a hypothesis test of the ...

stats - A statistics practitioner wishes to test the following hypothesis: H0...

Math 540 - The Department of Management Science at Tech has sampled 250 of its ...